Belt shifting and replacing device



(No Model.) 2 Sh ee tsSheet 1.

P. DIEHL.

BELT SHIETING AND REPLACING DEVICE.

No. 313,999. Patented Mar. 17, 1885.

I VENTOR WITNESSES (No Model.) 4 2 Sheets-Sheet 2.

P. DIEHL.

BELT SHIETING AND REPLACING DEVICE.

Patented Mar. 17,1885.

RNEY

WITNESSES 2E2 INVENTOR N. PETERS. PhohyLilhognphur, Washingtnm 0.0.

Uivrrnn Smarts PA ENT FHQE.

PHILIP DIEHL, OF ELIZABETH, NEW JERSEY, ASSIGNOR TO THE SINGER MANUFACTURING COMPANY OF NE\V JERSEY.

BELT SHlFTING AND REPLACING DEVICE.

I SPECIFICATION forming part of Letters Patent No. 313,999. dated IvIarch 17, 1885.

Application filed January :11, L85. (No mode.)

To (67/, 10710721. [I may ('mrccrn:

Be it known that I, PHILIP DIEHL, a citizen of the United States, residing at Elizabeth, in the countyof Union and State of New Jersey,

haveinvented certain new and useful Improvements in Belt ShiftingandReplacingDevices,

of which the following is a specification, reference being had therein to the accompanying drawings. The object of my invention is to provide a convenient and cheaply-constructed belt-shifting device, by which a belt, after having been I shifted by said device from its pulley, will be automatically replaced in operative position when the shitlinglever is released by the operalor.

In carrying my invention into effect, I construct a shifting-lever with an openingthrough which the belt may pass,and provide a retract- 2o ing-spring by which said lever is returned to its normal position after the belt has been shifted from the pulley.

In applying my invention to sewing-machines, for wh ch it is more particularly intended, I prefer to pivot the shiftinglever to the top of the dressguard which partly surroundsthelowerpulleywheel,and I also deem it well to providesaid wheel withan inclined belt-replacing lip or projection to assist the 3) shifter in automatically replacing the belt. When the belt is new and stiff, a guard over the upper pulley on the driving-shaft of the machine is useful in preventing the belt from getting displaced, and a guide for the belt on the rear side of the cross-brace of the stand is also a useful adjunct in holding the belt in place. These several co-operative features of my invention are not, however, indispensable, and may be used or not, as circumstances may 4o require.

In the accompanying drawings,-Figure 1 is an elevation of a sewing-machine with my invention applied thereto. Fig. 2 is a partial side view with the cross-brace of the stand in section on line 2 2, Fig. 1. Figs. 3 and 4: are top views of the main pulley and adjacent parts, showing the shifter in different positions. Figs. 5and 6 are detail top and side views, respectively, of the shifter and adjacent parts.

A indicates the side supports of a sewingmachine stand; 13. the cross-brace thereof,and G the table on which is mounted the head or sewingnmchine proper D.

In the stand is mounted acrank-shaft, E, to which is secured the main dri\ ing-pulley F, and partly surrounding the latter on its front side is a dress-guard, G, to the top of which I prefer to pivot my beltshit'ting lever H, although I do not wish to he understood as lim: 6o iting myself to the parlicularlocation thereof, as it may be placed in any convenient position.

The lever H is provided with an opening, h,

through which the belt I loosely passes, anda spring, J, connected with said lever andwith some fixed part of the stand, as the top of the dressguard, serves to hold the lever in position for the belt when on the pulley to pass through it. The opening h in the lever H is preferably inclosed, as shown.so as to hold the belt positively at all times; but it is obvious that said lever may simply be forked for the passage of the belt. if desired. \Vhen the belts are new and stiff, thcyare liable when off the drivingpulleys and. released from tension to become displaced unless held positively,and to this end I prefer to cover the upper pulley on the driving-shaft of the machine with a guard, K. and as an lHItllIlOlltli means for hold ing the beltin place at all times a guide, L, at 83 tached to the rear side ofthe cross-brace or some other part of the stand, may also be used. From the foregoingit will be understood that the spring J will normally hold the shiftinglever H in the position shown in Figs. 3 and 5; 85 but when the beltis to be thrown from the driving-pulley F. the operator will move the shifter to the position indicated in Fig. 4, and the belt will then instantly run off from the pulley. \Vhen the shifting-lever is released by the op c .erator, it isimmediately returned to its original position by its retracting and holding spring J, and the belt is thus held in place to be run onto the pulley when the latter is rotated. To insure this automatic action, Ipre- 5 fer to provide said pulley with an inclined belt-replacing device or projection, f, which will engage the belt when the pulley is rotated in the proper direction and cause the former to run onto the latter. lco

I claim as my invention 1. The conibination,with a pulley-wheel, of a belt-shifter placed adjacent thereto and having an opening for the passage of the belt, and a spring connected with said shifter and adapted to hold the same in position for the belt to run on the said pulleyand to return or retract said shifter to such position after it has been moved to shift the belt from the pulley, substantially as set forth.

2. Aspring-retracted belt-shifter having an inclosed opening for the passage of the belt, substantially as set forth.

3. The combination,with a sewing-machine stand, ofa spring-retracted belt-shifter, substantially as set forth.

4. The conibination,with the dress-guard of a sewing-machine stand, of a belt-shifting 1ever pivoted thereto, substantially as set forth.

5. The con1bination,with the dress-guard of a sewingniachine stand, of a spring-retracted belt-shifter pivoted to the top thereof, substantially as set forth.

6. The combination,with a pulley provided With a belt-replacer, of a spring-retracted beltshifter, substantially as set forth.

7. The combination, with the main or lower driving-pulley and the belt-shifter,ofa beltguard for covering the upper pulley, substan tially as set forth.

8. The combination,with the stand, the beltshifter placed at the front side thereof, and the main driving-pulley, of a belt-guide on the rear side of said stand,substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses. V

PHILIP DIEHL.

Vitnesses:

JAMES REID, WM. WV. OovELL. 

